摘要
采用硝酸镧改性壳聚糖的方法制备新型除氟剂(La-CTS)吸附水中氟离子,分别考察了氟离子初始浓度、pH值、温度、吸附剂用量、吸附时间对La-CTS吸附性能的影响,确定最佳条件为:氟离子初始浓度为8.16 mg/L时,pH值为6,温度为20℃,吸附剂用量为0.7 g,吸附时间为160 min时,吸附达到平衡,除氟率达98.3%。
In the study,La-CTS was prepared as a novel fluoride adsorbent to remove fluorine using the method of lanthanum nitrate modified chitosan. The effect of the initial concentration of fluorine ion,p H,temperature,adsorbent dosage and adsorption time on the adsorption of fluoride onto La-CTS was studied. The result showed that it reached adsorption equilibrium with the fluoride removal rate of 98. 3% under the optimum condition,which was the initial concentration of 8. 16 mg/L,p H value of 6,the temperature at of 20 ℃,adsorbent dosage of 0. 7 g,the adsorption time of 160 min.
作者
徐美
赵淑芳
王剑
王洪玲
崔维真
XU Mei ZHAO Shu-fang WANG Jian WANG Hong-ling CUI Wei-zhen(College of chemistry and chemical engineering, Cangzhou Normal University, Cangzhou 061001, China Engineering Technology Institute Co.,Ltd., CNSIC, Tianjin 300450, China)
出处
《盐业与化工》
CAS
2016年第11期29-33,共5页
Jounral of Salt and Chemical Industry
基金
沧州市科技计划项目(No:151303004)
沧州市沿海区域天然产物化学工程技术中心资助(No:152002004D)
关键词
硝酸镧
壳聚糖
吸附
饮用水
降氟
lanthanum nitrate
modified chitosan
adsorption
drinking water
defluoridation
